Level 1. BLEND, LEND, END, BEND, BED
Level 2. SUB, BUSH, BLUSH, LUSH, BUS
Level 3. END, MAN, MAD, AND, DEN, AMEND
Level 4. SIT, ITS, KIT, TICK, SICK, STICK, SKI
Level 5. SUE, HOE, SHE, SHOE, HOSE, HOUSE, USE
Level 6. HAT, HAW, CAT, WHAT, CHAT, WATCH, ACT
Level 7. TIDE, TIRE, RIDE, DIET, EDIT, TIRED
Level 8. HATE, HEAT, EACH, ACHE, CHAT, CHEAT, TEACH
